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Loukanov, I. A.; Uziak, J. (International Symposium on Theory of Machines and Mechanisms (IFToMM), NaN, 2001)[more][less]
Abstract: The single-stroke ram press machine is widely used for sunflower oil extraction in African countries. It is manually operated, low speed machine constructed on the basis of slider-crank mechanism. The paper presents a detailed theoritical analysis of the mechanism of the linkage system. The analysis is done for different positions of the driving lever (handle) nad other parameters, which influence the performance of the machine. Based on that analysis conclusions on the optimal performance of the mechanism are drawn. URI: http://hdl.handle.net/10311/667 Files in this item: 1
Loukanov_IFToMM_2001.pdf (993.1Kb) -
Oladiran, M.T. (Elsevier Science Ltd, http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/description#description, NaN, 1994)[more][less]
Abstract: Solar energy is finding wide application via several energy-saving devices and systems. Its use, especially in rural areas, can often be limited by the non-availability of complete information on insolation data. In this investigation, both the mean extraterrestrial and terrestrial radiations were calculated for three zones in Nigeria. These zones were assumed to be dependent mainly on the latitude, L. The isotropic model was employed for the computation of the diffuse and ground reflected components of radiation. Consequently, the total insolation was obtained for various inclinations of the collector surface. It was found that three solar energy seasons exist for each zone. For maximum total incident radiation, a different collector inclination is ideal for each solar energy season. However, for all year round applications, a fixed inclination varying between L and (L+10) degrees is recommended. URI: http://hdl.handle.net/10311/672 Files in this item: 1
Oladiran_AE_1994.pdf (1.391Mb) -
Kutua, S.; Mothibi, J. (University of Botswana, Faculty of Engineering and Technology, http://ajol.info/index.php/bjt, April NaN, 2003)[more][less]
Abstract: “Sustainable development” as a concept was popularised by a 1987 report of the United Nations World Commission on Environment and Development. The report defined sustainable development as “development that meets the needs of the present without compromising the ability of future generations to meet their own needs”. However, from this definition, we cannot ascertain the central intuition of the notion of sustainable development. Failure to do this makes it difficult to derive methods that can be used to formulate effective intervention policies that can enable nations to attain sustainable development. This paper briefly reviews various schools of thought in popular literature on the notion of sustainable development, exposes their weaknesses and develops a holistic notion of sustainable development based on the systems approach. URI: http://hdl.handle.net/10311/660 Files in this item: 1
Kutua_BJT_2003.pdf (5.513Mb) -
Kalabamu, F.T. (Routledge, NaN, 2009)[more][less]
Abstract: This paper explores the extent to which recent social, economic, demographic and environmental changes in Botswana have enabled women to inherit land, housing and other household assets. Using qualitative data from a study undertaken in the peri-urban village of Tlokweng, the paper notes that, unlike in the past when women were largely excluded from property inheritance, the majority of parents who participated in the study on which this paper is based are now more inclined and willing to share their estate equally among all their children or to favour daughters over sons in deciding who should inherit residential properties. The changes, which are heavily contested by older women, young men and teenage boys, appear to have been due primarily to increased numbers of female heads of households and the role played by unmarried daughters in developing the family estate and caring for the aging parents. URI: http://hdl.handle.net/10311/750 Files in this item: 1
kalabamu2009EGALITARIANinheritance.pdf (1.388Mb) -
Kalabamu, F.T. (Taylor & Francis (Routledge), http://www.informaworld.com/smpp/title~content=t713413745, NaN, 2009)[more][less]
Abstract: This paper explores the extent to which recent social, economic, demographic and environmental changes in Botswana have enabled women to inherit land, housing and other household assets. Using qualitative data from a study undertaken in the peri-urban village of Tlokweng, the paper notes that, unlike in the past when women were largely excluded from property inheritance, the majority of parents who participated in the study on which this paper is based are now more inclined and willing to share their estate equally among all their children or to favour daughters over sons in deciding who should inherit residential properties. The changes, which are heavily contested by older women, young men and teenage boys, appear to have been due primarily to increased numbers of female heads of households and the role played by unmarried daughters in developing the family estate and caring for the aging parents. URI: http://hdl.handle.net/10311/745 Files in this item: 1
Kalabamu_DSA_2009.pdf (1.089Mb) -
Rwelamila, P. D.; Talukhaba, A .A.; Ngowi, A.B. (Emerald http://www.emeraldinsight.com, NaN, 1999)[more][less]
Abstract: The lack of 'ubuntu'(African group solidarity) between project stakeholders in the Southern Africa Development Community (SADC) public building sector has been surrounded by controversy and strongly held opinions. The work reported in this paper attempts to indicate some salient issues affecting the relationshps between project stakeholders. The Botswana public building sector is used as a main case study and follwo-up studies are carried out involving another eight SADC countries. The paper addresses two propositions.First, that the lack of 'ubuntu' between project stakeholders is primarily due to an inappropriate project organizational structure.Second, that a default traditional construction procurement system (TCPS) provides a poor relationship management system. Information is obtained on the research areas through questionnaires to confirm executives, contract managers, site managers, trade foremen and skilled tradeperson on the dominant procurement system used in Botswana. Furthermore, senior technical officers of Public Works Ministries of another eight SADC countries are interviewed as a follow-up to the Botswana study. The primary conclusion to be drawn is that the building procurement system purported to be in use in the SADC public building sector differs significantly from that recommended in the theory, resulting in poor relationships between project stakeholders. This is primarily due to the use of inappropriate building procurement systems. In general, the TCPS in the SADC public buiding sector is used as a 'default system.' This has led to a situation where project management is a 'firefighting' activity, where group solidarity between project stakeholders is out of reach. Salient steps are proposed with proviso that the SADC public building sector should establish appropriate methods of selecting building procurement systems as a prerequisite in formulating appropriate project organizational structures which will bring the spirit of real co-operation between project stakeholders towards project success. URI: http://hdl.handle.net/10311/612 Files in this item: 1
Rwelamila_ECAM_1999.pdf (1.580Mb) -
Nedovic-Budic, Z.; Cavric, B. (Routledge, NaN, 2006)[more][less]
Abstract: With increasing internationalization of urban planning throughout the twentieth century and in the past several decades in particular, planning ideas and practices have been exported from a few, and imported in many countries. However, this ‘trade’ happens without clear expectations about the ensuing dynamics between the internal context and external influences. This paper attempts to enhance understanding of how planning systems evolve and which factors affect them. The conceptual frameworks and typologies used to characterize planning systems and their determinants are reviewed. Building on previous work, an integrated framework is proposed that captures the process, factors and outcomes of urban planning systems. The history of planning in Serbia and Montenegro is used to illustrate how a planning system evolves under changing circumstances and influences and to demonstrate the complexity of such process. The case study is not intended to provide a detailed historical account of the country’s planning trajectory, but to highlight the applicability of elements of the framework in a real setting. In particular, the focus is on conditions of imposition versus voluntary adoption of planning ideas as a way of examining the interaction between the local context and imported models, as well as the implications of such interaction. The article concludes with several pointers about the necessary research on the nature of planning exports and imports and their effects on the resultant urban systems, processes, environments and quality of life. URI: http://hdl.handle.net/10311/738 Files in this item: 1
cavric2006WAVES.pdf (4.557Mb)
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Now showing items 110-116 of 116